seq_buf: Create seq_buf_used() to find out how much was written
Add a helper function seq_buf_used() that replaces the SEQ_BUF_USED() private macro to let callers have a method to know how much of the seq_buf was written to. Link: http://lkml.kernel.org/r/20141114011412.170377300@goodmis.org Link: http://lkml.kernel.org/r/20141114011413.321654244@goodmis.org Reviewed-by: Petr Mladek <pmladek@suse.cz> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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@ -64,6 +64,12 @@ seq_buf_buffer_left(struct seq_buf *s)
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return (s->size - 1) - s->len;
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return (s->size - 1) - s->len;
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}
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}
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/* How much buffer was written? */
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static inline unsigned int seq_buf_used(struct seq_buf *s)
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{
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return min(s->len, s->size);
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}
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extern __printf(2, 3)
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extern __printf(2, 3)
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int seq_buf_printf(struct seq_buf *s, const char *fmt, ...);
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int seq_buf_printf(struct seq_buf *s, const char *fmt, ...);
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extern __printf(2, 0)
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extern __printf(2, 0)
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@ -16,9 +16,6 @@
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#include <linux/seq_file.h>
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#include <linux/seq_file.h>
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#include <linux/seq_buf.h>
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#include <linux/seq_buf.h>
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/* How much buffer is written? */
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#define SEQ_BUF_USED(s) min((s)->len, (s)->size - 1)
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/**
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/**
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* seq_buf_print_seq - move the contents of seq_buf into a seq_file
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* seq_buf_print_seq - move the contents of seq_buf into a seq_file
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* @m: the seq_file descriptor that is the destination
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* @m: the seq_file descriptor that is the destination
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@ -28,7 +25,7 @@
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*/
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*/
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int seq_buf_print_seq(struct seq_file *m, struct seq_buf *s)
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int seq_buf_print_seq(struct seq_file *m, struct seq_buf *s)
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{
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{
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unsigned int len = SEQ_BUF_USED(s);
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unsigned int len = seq_buf_used(s);
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return seq_write(m, s->buffer, len);
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return seq_write(m, s->buffer, len);
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}
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}
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